Oibaf has released a new version of his Spectrum Emulator for Nintendo Wii, here more info:

FBZX Wii is a ZX Spectrum emulator.
The project is based on FBZX originally written by Sergio Costas (http://www.rastersoft.com/fbzx.html). The code has been ported to Wii and largely improved with many new features by Oibaf.

The main features are:

Emulates accurately the Original 48Kspectrum (both issue 2 and issue 3), the classic 128K, the Amstrad Plus 2, the Amstrad Plus 2A, the Spanish 128K and the NTSC 48k. This includes screen, keyboard and sound (both speaker and AY-3-8912 chip).

Screen emulation is extremely accurate, so it can emulate border effects and even attribute effects.